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00173 Application of thermogravimetric analysis to studies of hydrogenation of coal-derived liquid
02
Derived
97/00170
Liquid
Activation
97100177 Catalyti effect Taiheiyo coal. (2). & lecular products
Fuels
of pyrite for coal liquefaction
catalyst
Krrigi Huppyo Ronh~u~sh~~, 1993, 30. I6 I Hirano. K. el cl/.. .Scki~un &g&c 164. (In Japanese) Invesigation of the catalytic activity of pulverized pyrite in a 5-L batchautoclave. Pyrite is pulverized to a size smaller than I I’m in a wet-type or dry-type mill which i\ applicable to a pilot plant. Pulverized pyrite is readily oxidized by atmospheric oxygen and loses its catalytic activity. so it needs treatment under an inert atmosphere and reactivation after oxidation. Catalytic activity of pulverized pyrite increases with decreasing average particle size. In the case where the average particle \ize is smaller than I ,,m. pulverized pyrite is nearly comparable to synthetic iron sulfide which is the specified catalyst of the pilot plant.
Analysis of coal tar 97/00171 thermal behavior and composition
pitch:
relations
between
107. Guillen. M. D. P/ NI.. F1rel. 1996. 75, (9). IIOI-I This paper discusse\ the influence of pitch composition on its thermal behaviour and emphasizes gas chromatological analysis of their volatile fraction. The pyrolysis of nine coal tar pitches was studied hy thermogravimetric analysis and derived thermogravimetry. The results showed that high coke yields were obtained from pitches with a volatile fraction rich in both highly condensed structures and alternant peri-condensed systems.
97100172
Analysis
and dehydrogenation
of coal liquefied
oils
Morltaka. S. ef crl.. Sekiccrr? Kugoku KU@ Hupj>yo Rodmml~~~, 1994. 3 I, 2X9-292. (In Japaneke) The paper describes how, in order to develop an effective method for the manufacture of aromatic chemicals from coal liquids. dehydrogenation of heavy naphtha and light (Ii1 was studied. The coal liquids were produced hl thr NEDOL process from Illinois No.6, Wyoming, and Tanitharm coals. It way found that irrespective of the original coals, the heavy naphtha and light oil fractions can be transformed into those containing naphthalene and methylnaphthalene. respectively, as the major components.
Application of thermogravimetric 97100173 dies of hydrogenation of coal-derived liquid
analysis
to stu-
Song. X. et ul.. Ran/icw Huaxur Xuc~hrro, 1906, 24. (3). 245-250. (In Chinese) Presents a study of catalytic hydroprocessing of a coal-derived liquid (CDL) usine thermoeravimetric analysis (TGA). Because of the high sensitivity of the -TGA initrument and comblexity of the system studied, strictly controlled operating conditions are essential to obtain reliable and comparable data. The effects of several operating parameters of TGA data of a CDL and of CDL-catalyst mixture were systematically investigated. Standardized experimental conditions were established.
971007 74 distillates.
Catalyst development for upgrading Increase in hydrocracking activity
coal-derived
Srkitw Kagakrr Kaigi Happyo Ronhunshu. I YY5, 32nd. Ma-\uda, K. er t/l., 129-132 (Japan). Details how a Ni-W/lJSY-A1201 hydrocracking catalyst was developed in order to produce lighter fractions from middle and heavy distillates of coalderived liquids. Although the catalyst showed considerable improvement in hydrocracking activity, changes in local structure of active metal and accumulation of carbonaceous material indicated further areas for its improvement.
Catalytic activities 97100175 plexes in the coal liquefaction
of iron
carbonyl
sulfur
com-
Taniguchi. H. ef al.. Sekilurl Kagrrku Koigi Happyo Ronhun~hu, 1995, 32, I 65-68. (In Japanese) For this paper iron carhonyl sulfur complexes were studied as precursors of finely dispersed coal liquefaction catalysts. Liquefaction of a Yallourn coal in I-methylnaphthalene with iron complexes was carried out at 693 K. 5.0 MPa for 60 minutes.
Catalytic effect of CUE on liquefaction for 97100176 Taiheiyo coal. (1). Effect of catalyst of Cu(OH) and its related compounds on liquefaction rate Srkitan Kagaku Kaigi Happyo Ror$xtnshu. Yaginuma, R. and Yoshii, T.. 1993, 30, 169-172. (In Japanese) It is known that Cu(OH) is easily decompounded thermally and reduced to copper through cupric oxide at <300”C in hydrogen gas. The rate of liquefaction was examined using CUE and its decomposition products. CuO. CuzO, and Cu, as catalysts because some active catalyst species may he formed during decomposition,
Liquid fuels (derived liquid fuels)
of CUE upon liquefaction for weight distribution of liquefaction
Yaginuma, R. and Yoshii, T.. Sckifun Kuguku Ku&i Hupp~o Ro,lhunrh~c, 1993, 30. 173-176. (In Japanese) In order to clarify the relation between the rate ot liquefaction and the distribution ot molecular weight of liquefaction products, liquefaction is carried out by using Cu(OH): as a cata,lyst. The relation of the liquefaction ratio and the molecular weight distribution of liquefaction product\ is investigated.
97100178 Catalytic effect on the hydrogenolysis reactions mixture of coal liquid and deashed liquefaction residue
of
Sugano, M. cf N/., Sckitan Kagokh Krri
97100179 Catalytic effects on the co-upgrading coal liquid and coal liquefaction residues
reactions
of
Koyama. K. ?I N/.. Sekirarl Kagaktr Kaigi Hnppyc~ Rot~hurt.~hrr. 1005. 32. 333h. (In Japanese) This article discusses the catalytic effect\ on the ccl-upgrading rcactiona 01 coal liquid and coal liquefaction residue in the presence of several catalysts at 5.9 MPa of initial hydrogen pressure and 693 K for 60 minutes. In order to investigate the activities of several hydrocracking and hydrogenation catalysts, model reactions were carried out by using diphenylmethane and phenanthrene under the same conditions as co-upgrading reactions.
97lOO180 liquefaction
Catalytic
effect of selenium
dioxide
on brown coal
Sasaki, M. ef nl., Srkifart Krrgaku Korgi /fnppyo Rotfhumllrc, 1994. 3 I. 25% Japanese) Examines the effect of selenium dioxide on decarhoxylation of Yallourn coal under nitrogen pressure of 1.0 MPa at 473 K. It has been shown that selenium dioxide accelerates decarhoxylation of aliphatic carboxylic acids in coal structure. However, the coal structurt slightly varies due to decarhoxylation. Liquefaction of Yallourn coal using selenium and selenium dioxide as a catalyst war also studied. Both selenium and selenium dioxide catalysts indicate the same yields of pyridine- and toluene-soluble fractions. Selenium dioxide is reduced to selenium under the heat treatment conditions. The results indicate that the catalytic effect of selenium becomes a dominant factor of Increase in cr,nversion rather than decarhoxylation of coal.
256.(In
97100181 Characterization of liquefaction ondary ion mass spectroscopy (SIMS)
residue
with sec-
Martin. R. R. et al., Sekitan Kaguku Kuigi Hoppyo Ronhrrmhu. I YY3, 30. 252-255. (In Japanese) This paper presents the results of an investigation using two and three dimensional SIMS imaging techniques to examine the feasibility of catalyst recovery from liquefaction residue. Residue\ were obtained from a I ton/ day NEDOL PSU plant which uses Illinois coal as feedstock and synthetic pyrite as catalyst. The results suggested that the SIMS imaging provides a promising technique for the examination of liquefaction residue.
97100182
Coal liquefaction
method
Mochizuki, M. et al.. Jpn Kokai Tokkyo Koho JP 08,143.870 [Yh,l43.870] (Cl. CIOGIIOX), 4 Jun 1996, Appl. 941308,381, I8 Nov 1994. (In Japanese) This paper examines the coal liquefaction method composed of four processes of slurry formulation, coal liquefaction. liquefied oil distillation and solvent hydrogenation comprises mixing a part >!f or whole middle oil with total amount of heavy oil obtained from the dtstillation process and feeding a fixed ratio of middle/heavy oil to the solvent hydrogenation process for control of the amount of recycle solvent. The method prevents the fluctuation of the fraction of aromatics of the recycle solvent and recycle solvent with high-hydrogen donor ability can be gtahly manufactured by short time.
Coal liquefaction over iron-based fine particles 97100183 catalyst. Sulfidation and activity of catalyst 1993, 30. 244Kuriki. Y. et al., Sekifan Kugaku Knigi Happw Rmhrrnshu. 247. (In Japanese) The paper examines the use an iron sulfide-based fine catalyst, generated with di-Me disulfide and H&H under various conditions. Its catalytic activities for hydrogenation and hydrocracking are investigated. The hydrogenation of I-methylnaphtharene (I-MN) and hydrocracking of diphenylmethane (DPM) experiments. were carried out in 25 ml quartz tube inserted into 50 ml stainless steel autoclave at 35%450°C under 7.9 MPa hydrogen initial pressure for 1 hour. The crystal structure of spent iron particles were analyzed by X-ray diffractometer.
Fuel and Energy Abstracts
January 1997
13
Derived
97/00170
Liquid
Activation
97100177 Catalyti effect Taiheiyo coal. (2). & lecular products
Fuels
of pyrite for coal liquefaction
catalyst
Krrigi Huppyo Ronh~u~sh~~, 1993, 30. I6 I Hirano. K. el cl/.. .Scki~un &g&c 164. (In Japanese) Invesigation of the catalytic activity of pulverized pyrite in a 5-L batchautoclave. Pyrite is pulverized to a size smaller than I I’m in a wet-type or dry-type mill which i\ applicable to a pilot plant. Pulverized pyrite is readily oxidized by atmospheric oxygen and loses its catalytic activity. so it needs treatment under an inert atmosphere and reactivation after oxidation. Catalytic activity of pulverized pyrite increases with decreasing average particle size. In the case where the average particle \ize is smaller than I ,,m. pulverized pyrite is nearly comparable to synthetic iron sulfide which is the specified catalyst of the pilot plant.
Analysis of coal tar 97/00171 thermal behavior and composition
pitch:
relations
between
107. Guillen. M. D. P/ NI.. F1rel. 1996. 75, (9). IIOI-I This paper discusse\ the influence of pitch composition on its thermal behaviour and emphasizes gas chromatological analysis of their volatile fraction. The pyrolysis of nine coal tar pitches was studied hy thermogravimetric analysis and derived thermogravimetry. The results showed that high coke yields were obtained from pitches with a volatile fraction rich in both highly condensed structures and alternant peri-condensed systems.
97100172
Analysis
and dehydrogenation
of coal liquefied
oils
Morltaka. S. ef crl.. Sekiccrr? Kugoku KU@ Hupj>yo Rodmml~~~, 1994. 3 I, 2X9-292. (In Japaneke) The paper describes how, in order to develop an effective method for the manufacture of aromatic chemicals from coal liquids. dehydrogenation of heavy naphtha and light (Ii1 was studied. The coal liquids were produced hl thr NEDOL process from Illinois No.6, Wyoming, and Tanitharm coals. It way found that irrespective of the original coals, the heavy naphtha and light oil fractions can be transformed into those containing naphthalene and methylnaphthalene. respectively, as the major components.
Application of thermogravimetric 97100173 dies of hydrogenation of coal-derived liquid
analysis
to stu-
Song. X. et ul.. Ran/icw Huaxur Xuc~hrro, 1906, 24. (3). 245-250. (In Chinese) Presents a study of catalytic hydroprocessing of a coal-derived liquid (CDL) usine thermoeravimetric analysis (TGA). Because of the high sensitivity of the -TGA initrument and comblexity of the system studied, strictly controlled operating conditions are essential to obtain reliable and comparable data. The effects of several operating parameters of TGA data of a CDL and of CDL-catalyst mixture were systematically investigated. Standardized experimental conditions were established.
971007 74 distillates.
Catalyst development for upgrading Increase in hydrocracking activity
coal-derived
Srkitw Kagakrr Kaigi Happyo Ronhunshu. I YY5, 32nd. Ma-\uda, K. er t/l., 129-132 (Japan). Details how a Ni-W/lJSY-A1201 hydrocracking catalyst was developed in order to produce lighter fractions from middle and heavy distillates of coalderived liquids. Although the catalyst showed considerable improvement in hydrocracking activity, changes in local structure of active metal and accumulation of carbonaceous material indicated further areas for its improvement.
Catalytic activities 97100175 plexes in the coal liquefaction
of iron
carbonyl
sulfur
com-
Taniguchi. H. ef al.. Sekilurl Kagrrku Koigi Happyo Ronhun~hu, 1995, 32, I 65-68. (In Japanese) For this paper iron carhonyl sulfur complexes were studied as precursors of finely dispersed coal liquefaction catalysts. Liquefaction of a Yallourn coal in I-methylnaphthalene with iron complexes was carried out at 693 K. 5.0 MPa for 60 minutes.
Catalytic effect of CUE on liquefaction for 97100176 Taiheiyo coal. (1). Effect of catalyst of Cu(OH) and its related compounds on liquefaction rate Srkitan Kagaku Kaigi Happyo Ror$xtnshu. Yaginuma, R. and Yoshii, T.. 1993, 30, 169-172. (In Japanese) It is known that Cu(OH) is easily decompounded thermally and reduced to copper through cupric oxide at <300”C in hydrogen gas. The rate of liquefaction was examined using CUE and its decomposition products. CuO. CuzO, and Cu, as catalysts because some active catalyst species may he formed during decomposition,
Liquid fuels (derived liquid fuels)
of CUE upon liquefaction for weight distribution of liquefaction
Yaginuma, R. and Yoshii, T.. Sckifun Kuguku Ku&i Hupp~o Ro,lhunrh~c, 1993, 30. 173-176. (In Japanese) In order to clarify the relation between the rate ot liquefaction and the distribution ot molecular weight of liquefaction products, liquefaction is carried out by using Cu(OH): as a cata,lyst. The relation of the liquefaction ratio and the molecular weight distribution of liquefaction product\ is investigated.
97100178 Catalytic effect on the hydrogenolysis reactions mixture of coal liquid and deashed liquefaction residue
of
Sugano, M. cf N/., Sckitan Kagokh Krri
97100179 Catalytic effects on the co-upgrading coal liquid and coal liquefaction residues
reactions
of
Koyama. K. ?I N/.. Sekirarl Kagaktr Kaigi Hnppyc~ Rot~hurt.~hrr. 1005. 32. 333h. (In Japanese) This article discusses the catalytic effect\ on the ccl-upgrading rcactiona 01 coal liquid and coal liquefaction residue in the presence of several catalysts at 5.9 MPa of initial hydrogen pressure and 693 K for 60 minutes. In order to investigate the activities of several hydrocracking and hydrogenation catalysts, model reactions were carried out by using diphenylmethane and phenanthrene under the same conditions as co-upgrading reactions.
97lOO180 liquefaction
Catalytic
effect of selenium
dioxide
on brown coal
Sasaki, M. ef nl., Srkifart Krrgaku Korgi /fnppyo Rotfhumllrc, 1994. 3 I. 25% Japanese) Examines the effect of selenium dioxide on decarhoxylation of Yallourn coal under nitrogen pressure of 1.0 MPa at 473 K. It has been shown that selenium dioxide accelerates decarhoxylation of aliphatic carboxylic acids in coal structure. However, the coal structurt slightly varies due to decarhoxylation. Liquefaction of Yallourn coal using selenium and selenium dioxide as a catalyst war also studied. Both selenium and selenium dioxide catalysts indicate the same yields of pyridine- and toluene-soluble fractions. Selenium dioxide is reduced to selenium under the heat treatment conditions. The results indicate that the catalytic effect of selenium becomes a dominant factor of Increase in cr,nversion rather than decarhoxylation of coal.
256.(In
97100181 Characterization of liquefaction ondary ion mass spectroscopy (SIMS)
residue
with sec-
Martin. R. R. et al., Sekitan Kaguku Kuigi Hoppyo Ronhrrmhu. I YY3, 30. 252-255. (In Japanese) This paper presents the results of an investigation using two and three dimensional SIMS imaging techniques to examine the feasibility of catalyst recovery from liquefaction residue. Residue\ were obtained from a I ton/ day NEDOL PSU plant which uses Illinois coal as feedstock and synthetic pyrite as catalyst. The results suggested that the SIMS imaging provides a promising technique for the examination of liquefaction residue.
97100182
Coal liquefaction
method
Mochizuki, M. et al.. Jpn Kokai Tokkyo Koho JP 08,143.870 [Yh,l43.870] (Cl. CIOGIIOX), 4 Jun 1996, Appl. 941308,381, I8 Nov 1994. (In Japanese) This paper examines the coal liquefaction method composed of four processes of slurry formulation, coal liquefaction. liquefied oil distillation and solvent hydrogenation comprises mixing a part >!f or whole middle oil with total amount of heavy oil obtained from the dtstillation process and feeding a fixed ratio of middle/heavy oil to the solvent hydrogenation process for control of the amount of recycle solvent. The method prevents the fluctuation of the fraction of aromatics of the recycle solvent and recycle solvent with high-hydrogen donor ability can be gtahly manufactured by short time.
Coal liquefaction over iron-based fine particles 97100183 catalyst. Sulfidation and activity of catalyst 1993, 30. 244Kuriki. Y. et al., Sekifan Kugaku Knigi Happw Rmhrrnshu. 247. (In Japanese) The paper examines the use an iron sulfide-based fine catalyst, generated with di-Me disulfide and H&H under various conditions. Its catalytic activities for hydrogenation and hydrocracking are investigated. The hydrogenation of I-methylnaphtharene (I-MN) and hydrocracking of diphenylmethane (DPM) experiments. were carried out in 25 ml quartz tube inserted into 50 ml stainless steel autoclave at 35%450°C under 7.9 MPa hydrogen initial pressure for 1 hour. The crystal structure of spent iron particles were analyzed by X-ray diffractometer.
Fuel and Energy Abstracts
January 1997
13